PLATE XXI I. 

 Aloiopteris Winslovii D. W. 



(Page 72.) 



Fig. 1. Portions of three of the very long secondary pinnae bearing ultimate pinnae of the normal 

 form and size. U. S. Nat. Mus., 5609. 



2. Sterile pinu;i3 of same species on right. Fragments of several fertile pinnse on the left. 



U.S. Nat. Mus., 5610. 



3. Fragments showing very large pinnules of the same species. U. S. Nat. Mus., 5613. 



354 



